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Antennas
  • H Doublebay Antennas - Cheap and EZ to build Bi-Directional VHF & HF antennas with gain
    [ Hits: 1768 | Votes: 4 | Rating: 2.75 ]
Antennas : 15M
  • Bean Tin Antenna for 15 m - GM4BKV article on how to recycle our rubbish and produce a cheap and effective 15m antenna into the bargain
    [ Hits: 1822 | Votes: 2 | Rating: 3.00 ]
Antennas : Baluns
  • How to Make a Great 9:1 RX Transformer - There are lots of good designs for matching transformers for receiving antennas. Make it yourself it's cheap and easy, and very high performance. This is the design used in the TRX-9 transformers.
    [ Hits: 2954 | Votes: 0 | Rating: 0.00 ]
Antennas : Halo Antennas : Portable
  • Squid poles as portable multiband antennas - Fancy a cheap, collapsible self-contained portable antenna for 80, 40, 30, 20 and 15m that works really well and can be erected in minutes, by VK7JJ
    [ Hits: 1212 | Votes: 1 | Rating: 7.00 ]
Antennas : Quad
  • Dual Quad Antenna - Cheap but effective multiband quad antenna covering the entire horizon on 10-12-15-17-20m bands.
    [ Hits: 334 | Votes: 2 | Rating: 2.50 ]
Antennas : VHF UHF DX Resources : Shack Rental
  • Kennedy Safaris - Kennedy Safaris, cheap,well organized and ham radio friendly
    [ Hits: 494 | Votes: 1 | Rating: 10.00 ]
Operating Modes : Digital ATV
  • A D-ATV transmitter project - Build this simple and cheap 70 MHz Exciter and start to transmit Digital Television by Jean-Francois Fourcadier
    [ Hits: 2309 | Votes: 1 | Rating: 8.00 ]
Radio Equipment : HF Transceivers : Elecraft K2
  • Elecraft K2 Improving CW Filter - Here is a cheap and simple way to significantly improve the K2 CW filter(s). With this mod, even strong signals will fade to black as they tune out of the filter pass band
    [ Hits: 338 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Amplifiers : HF Amplifiers
  • HF power amplifier using GI7B - Gi7b is tube designed for microwaves but working good as HF amplifier. Idea is to build cheap, reliable HF amplifier covering 160 meters band.
    [ Hits: 3658 | Votes: 9 | Rating: 4.33 ]
Technical Reference : Arduino
  • Cheap Antenna Analyzer with Arduino - Build your own home made Antenna Analyzer with an arduino micro, or a cheeper one with a pic processor
    [ Hits: 1574 | Votes: 3 | Rating: 7.00 ]
Technical Reference : Beacon keyers
  • The Milli Beacon - This page describes an cheap RF signal source, a portable micro beacon, using a low cost temperature controlled crystal oscillator
    [ Hits: 886 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Duplexers
  • A Two Meter Duplexer - How to get a cheap-squeaky clean signal, a 2 meter duplexer designed by Leonard WB3AYW
    [ Hits: 3505 | Votes: 8 | Rating: 5.12 ]
Technical Reference : Electronics
  • PCB with kitchen appliances - Cheap and relatively easy way of making professional quality printed circuit boards at home
    [ Hits: 262 | Votes: 2 | Rating: 5.50 ]
Technical Reference : Frequency Counter
  • Simple frequency counter - This is an incredibly simple and cheap frequency counter with binary readout, based on the ideas of Onno PA2OHH.
    [ Hits: 1308 | Votes: 1 | Rating: 2.00 ]
Technical Reference : Keyers
  • A Simple CW Keying Interface - Functional, easy, and cheap, all good Ham Radio characteristics by Terry Fletcher, WA0ITP
    [ Hits: 2034 | Votes: 4 | Rating: 1.25 ]
Technical Reference : QRP Projects : QRP CW Transceiver
  • Cheap 40m 80m glowbug - A valve CW QRP transmitter is simple to build and will not break the bank,Built to a budget, no parts where purchased, all components from the junk box and a simple aluminium box was used as a chassis
    [ Hits: 569 | Votes: 1 | Rating: 10.00 ]
Technical Reference : Repeater
  • Sub-Tone Generator for repeater triggering - If you need a cheap and easy to construct Subtone Generator for EU-model VHF-UHF rig, here is a solution that works very well.
    [ Hits: 849 | Votes: 4 | Rating: 8.00 ]
Technical Reference : Spectrum Analyzers
  • 100MHz Spectrum Analyzer - This Spectrum Analyzer supposes to be a cheap and a useful device for any ham radio by Iulian Rosu, YO3DAC / VA3IUL
    [ Hits: 1404 | Votes: 4 | Rating: 1.00 ]
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